Postoperative Activity Restrictions

Postoperative Activity Restrictions After Slings: A Randomized Controlled Trial

IMPORTANCE

Restricting activity after midurethral slings is an unproven practice.

OBJECTIVE

The objective of this study was to evaluate the effect of postoperative activity restriction on satisfaction and outcomes after slings.

STUDY DESIGN

This was a multicenter, 2-arm, noninferiority randomized controlled trial. Patients aged 18-85 years undergoing treatment with a midurethral sling were randomized 1:1 to postoperative activity restriction or liberal activity. Restrictions included avoidance of strenuous exercise and heavy lifting. The liberal group was allowed to resume activity at their discretion. Our primary outcome was satisfaction with postoperative instruction at 2 weeks. Secondary outcomes included surgical failure, mesh exposure rates, and other adverse events.

RESULTS

In total, 158 patients were randomized with 80 to the liberal group and 78 to the restricted group. At 2 weeks, 54 (80.6%) of patients in the liberal group and 48 (73.9%) of patients in the restricted group were satisfied. We found statistical evidence supporting the hypothesis that postoperative liberal activity instruction is noninferior to activity restriction with regard to patient satisfaction (P = 0.0281). There was no significant difference in strenuous activity at 2 weeks (P = 0.0824). The liberal group reported significantly more moderate activity at 2 weeks (P = 0.0384) and more strenuous activity at 6 weeks and 6 months (P = 0.0171, P = 0.0118, respectively). The rate of recurrent or persistent stress incontinence for liberal versus restricted groups was 18.52% versus 23.53% (P = 0.635). There were no statistically significant differences in complication rates.

CONCLUSIONS

Postoperative liberal activity was noninferior to activity restriction with regard to patients' satisfaction. There was no evidence supporting a statistically significant association between postoperative instruction and negative surgical outcomes.

Activity Restrictions After Gynecologic Surgery

Gynecologic surgeons have traditionally restricted the physical activity of postoperative patients. Minimally invasive surgery and enhanced recovery after surgery programs have contributed to decreased hospital stays and more expeditious recovery. In this narrative review, we review the current state of postoperative activity restrictions in gynecology and other specialties, the purported risks and potential benefits of postoperative activity, the available evidence to refute or support activity in the postoperative activity, and, finally, the potential benefit of added activity in the postoperative period.

[Physical Strain after Abdominal Surgery - Results of a Patient Survey]

INTRODUCTION

Incision hernias are common complications after abdominal surgery and affect the recommendations on postoperative physical strain, as it is thought that excessively early strain causes incisional hernias. However, there is no evidence to justify this. This study evaluates the effect of postoperative strain on the risk of incisional hernia.

MATERIALS AND METHODS

Patients with a laparoscopy (LS) or laparotomy (LT) were asked to complete a questionnaire on postoperative strain, complaints and quality of life. Patients with hernia surgery, or open abdomen therapy for complicated courses (Clavien-Dindo > III) were excluded.

RESULTS

393 patients completed the questionnaire (43.6%). 274 were LS and 128 LT. The incidence of incisional hernias was 5.2% (LS) and 18.0% (LT, p = 0.001). Incisional hernia patients were younger and more commonly males. 30.5% of incisional hernia patients did not return to normal physical strain postoperatively. Abdominal binders did not affect the hernia rate. The incisional hernia patients showed decreased quality of life scores in both mental and physical domains.

CONCLUSION

Early postoperative physical strain was not a risk factor for incisional hernia development in this study. However, prospective studies are needed to create necessary evidence to recommend earlier postoperative return to normal physical strain.

Standard Restrictions vs Expedited Activity After Pelvic Organ Prolapse Surgery: A Randomized Clinical Trial

Importance

Restrictions on postoperative activity following pelvic organ prolapse (POP) surgery are not evidence based. Nonetheless, many pelvic surgeons place lifting and activity restrictions on patients following surgery.

Objective

To evaluate whether expedited activity results in noninferior anatomic and symptomatic outcomes compared with standard activity restrictions after POP surgery.

Design, Setting, and Participants

This randomized noninferiority clinical trial included patients undergoing vaginal or laparoscopic apical reconstructive surgery for POP between July 1, 2020, and October 31, 2021, at a single academic tertiary referral center in Durham, North Carolina. Anatomic outcomes were assessed by masked examiners, and subjective outcomes were assessed via validated surveys, both completed at 3 months postoperatively. Patients meeting minimum physical activity criteria with at least stage II bothersome POP were eligible. A total of 218 patients were approached, of whom 123 were randomly assigned and 107 had complete outcome data and were included in the analysis.

Interventions

Patients were randomly assigned to receive standard restrictions vs expedited postoperative activity instructions.

Main Outcomes and Measures

The anatomic coprimary outcome was maximum anatomic POP support loss (SLmax), which is the most distal point of pelvic organ support loss according to the Pelvic Organ Prolapse Quantification System (noninferiority margin, 1.0 cm). The symptomatic coprimary outcome was the Pelvic Organ Prolapse Distress Inventory (POPDI) symptom score (noninferiority margin, 34.3 points). Differences between outcomes were assessed using linear regression models controlling for baseline SLmax and POPDI, respectively.

Results

Of 123 participants randomized, 107 had complete 3-month outcome data and were included in the analysis. Mean (SD) age was 62.8 (10.1) years. At 3 months, mean (SD) SLmax was -1.7 (1.4) cm in the expedited group and -1.5 (1.4) cm in the standard group (P = .44). After adjusting for baseline SLmax, the mean maximum support loss was 0.18 cm higher within the vaginal canal in the expedited group (95% CI, -0.68 to 0.33 cm). The coprimary outcome of POPDI score was a mean (SD) 23.7 (41.8) points in the expedited group vs 25.7 (39.3) points in the standard group (P = .80). After adjusting for baseline scores, mean POPDI scores were 5.79 points lower in the expedited group (95% CI, -20.41 to 8.84).

Conclusions and Relevance

The findings demonstrate that expedited activity after prolapse surgery results in noninferior anatomic and symptomatic prolapse outcomes. It is reasonable to instruct patients undergoing minimally invasive prolapse surgery to resume physical activities ad lib postoperatively.

Trial Registration

ClinicalTrials.gov Identifier: NCT04329715.

Intrinsic factors contributing to elevated intra-abdominal pressure

Pelvic floor disorders affect 24% of US women, and elevated intra-abdominal pressure may cause pelvic injury through musculoskeletal strain. Activity restrictions meant to reduce pelvic strain after traumatic events, such as childbirth, have shown little benefit to patients. Reported high variability in abdominal pressure suggests that technique plays a substantial role in pressure generation. Understanding these techniques could inform evidence-based recommendations for protective pelvic care. We hypothesized use of a motion-capture methodology could identify four major contributors to elevated pressure: gravity, acceleration, abdominal muscle contraction, and respiration. Twelve women completed nineteen activities while instrumented for whole body motion capture, abdominal pressure, hip acceleration, and respiration volume. Correlation and partial least squares regression were utilized to determine primary technique factors that increase abdominal pressure. The partial least squares model identified two principal components that explained 59.63% of relative intra-abdominal pressure variability. The first component was primarily loaded by hip acceleration and relative respiration volume, and the second component was primarily loaded by flexion moments of the abdomen and thorax. While reducing abdominal muscle use has been a primary strategy in protective pelvic floor care, the influence of hip acceleration and breathing patterns should be considered with similar importance in future work.

Strenuous physical activity, exercise, and pelvic organ prolapse: a narrative scoping review

INTRODUCTION AND HYPOTHESIS

High-intensity physical activity and exercise have been listed as possible risk factors for pelvic organ prolapse (POP). The aim of the present study is to conduct a literature review on the prevalence and incidence of POP in women who engage in regular physical activity. In addition, we review the effects of a single exercise or a single session of exercise on pelvic floor support. Finally, the effect of exercises on POP in the early postpartum period is reviewed.

METHODS

This is a narrative scoping review. We searched PubMed and Ovid Medline, the Physiotherapy Evidence Database (PEDro), and the Cochrane Database of Systematic Reviews up to May 2022 with the following MeSH terms: "physical activity" AND "exercise" AND "pelvic floor" AND "pelvic organ prolapse".

RESULTS

Eight prevalence studies were retrieved. Prevalence rates of symptomatic POP varied between 0 (small study within different sports) and 23% (Olympic weightlifters and power lifters). Parity was the only factor associated with POP in most studies. Three studies evaluated the pelvic floor after a single exercise or one session of exercise and found increased vaginal descent or increased POP symptoms. One prospective cohort study reported the development of POP after 6 weeks of military parashot training, and one randomized trial reported increased POP symptoms after transverse abdominal training. There is scant knowledge on exercise and POP in the postpartum period.

CONCLUSIONS

Prevalence of POP in sports varies widely. Experimental and prospective studies indicate that strenuous exercise increased POP symptoms and reduced pelvic floor support.

Functional Exercise Versus Specific Pelvic Floor Exercise: Observational Pilot Study in Female University Students

OBJECTIVES

To evaluate the electromyographic (EMG) activity of the pelvic floor musculature (PFM) that takes place when performing the functional movement screen (FMS) exercise, comparing it with the activation in the maximum voluntary contraction of PFM in the supine position (MVC-SP) and standing (MVC-ST).

MATERIAL AND METHODS

A descriptive, observational study conducted in two phases. In the first study phase, the baseline EMG activity of PFM was measured in the supine position and standing during MVC-SP and MVC-ST and during the execution of the seven exercises that make up the FMS. In the second phase of the study, the baseline EMG activity of PFM was measured in the supine position and standing during MVC-SP and MVC-ST and during the FMS exercise that produced the most EMG in the pilot phase: trunk stability push-up (PU). ANOVA, Friedman's and Pearson's tests were used.

RESULTS

All FMS exercises performed in the pilot phase showed a value below 100% maximum voluntary contraction (MVC) except PU, which presented an average value of 101.3 μv (SD = 54.5): 112% MVC (SD = 37.6). In the second phase of the study, it was observed that there were no significant differences (p = 0.087) between the three exercises performed: MVC-SP, MVC-ST and PU (39.2 μv (SD = 10.4), 37.5 μv (SD = 10.4) and 40.7 μv (SD = 10.2), respectively).

CONCLUSIONS

There is no evidence of the existence of significant differences in EMG activation in PFM among the three exercises analysed: MVC-SP, MVC-ST and PU. The results show better EMG values in the functional exercise of PU.

Intra-abdominal and perineal pressures during abdominal exercises: A cross sectional study in postpartum women

AIMS

Low intra-abdominal pressure (IAP) and high perineal pressure (PP) are safe conditions for pelvic floor. This study aims to measure IAP and PP in Beninese post-partum women during abdominal exercises and determine what exercise presents less risk for pelvic floor after delivery.

METHODS

IAP and PP were measured at rest and during exercises performed in random order: Cough, pelvic floor contraction (PFC), Curl-up, diaphragmatic aspiration (DA), Drawing-in, DA + Curl-up and Drawing-in+Curl-up, using a Micro-Full biofeedback PHENIX-Vivaltis with dual-channel probe. Results were presented as change from rest (maximal value during exercise minus value at rest) and expressed in percentage of this change for the reference exercise, Cough for IAP and PFC for PP. The ANOVA repeated measures test was used to compare pressures between exercises.

RESULTS

Seventeen postpartum women participated to this study. The maximal IAP and PP change were the highest (100%), respectively, during cough and PFC. During DA, IAP was the lowest (-7%) and PP was 51%. During Curl-up, IAP was moderate (43%) and significantly higher than during PFC (33%), Drawing-in (16%) and DA. PP was low (29%) and similar to that during Drawing-in (23%). Compared to Curl-up, Drawing-in+Curl-up increased PP (50%) but did not decrease IAP (40%). DA + Curl-up increased PP (58%) and decreased IAP (31%) compared to Curl-up but not compared to DA.

CONCLUSION

DA is safe and Curl-up presents little risk for the pelvic floor. According to interindividual variations observed in IAP and PP, intrinsic factors should be considered in future studies.

Recommendations on postoperative strain and physical labor after abdominal and hernia surgery: an expert survey of attendants of the 41st EHS Annual International Congress of the European Hernia Society

BACKGROUND

There are no valid recommendations or reliable guidelines available to guide patients how long they should refrain from lifting weights or returning to heavy physical labor after abdominal or hernia surgery. Recent studies found that surgeons' recommendations not to be evidence-based and might be too restrictive considering data on fascial healing and incisional hernia development. It is likely that this impairs the patient's quality of life and leads to remarkable socio-economic costs. Hence, we conducted this survey to gather international expert's opinions on this topic.

MATERIALS AND METHODS

At the 41st Annual International Congress of the EHS, attending international experts were asked to complete a questionnaire concerning recommendations on given proposals for postoperative refrain from heavy work or lifting after abdominal surgery and also after hernia repairs.

RESULTS

In total, 127 experts took part in the survey. 83.9% were consultants with a mean experience since specialization of more than 11 years. Two weeks of no heavy physical strain after laparoscopic surgery were considered sufficient by more than 50% of the participants. For laparotomy, more than 50% rated 4 weeks appropriate. For mesh-augmented sublay and IPOM repair of ventral or incisional hernias, more than 50% rated 4 weeks of rest appropriate. For complex hernia repair, 37% rated 4 weeks reasonable. Two weeks after, groin hernia surgery was considered sufficient by more than 50% of the participants.

CONCLUSION

Following groin hernia repair (Lichtenstein/endoscopic technique) and laparoscopic operation, the majority agreed on the proposal of 2 weeks refraining from physical strain. Four weeks of no physical strain were considered appropriate by a majority after laparotomy and open incisional hernia repair. However, the results showed substantial variation in the ratings, which indicates uncertainty even in this selected cohort of hernia surgery experts and emphasizes the need for further scientific evaluation. This is particularly remarkable, because a lack of evidence that early postoperative strain leads to higher incisional hernia rates.

TRIAL REGISTRATION

Number DRKS00023887.

Lack of Standardized Advice on Physical Strain Following Abdominal Surgery

BACKGROUND

In Germany as elsewhere, standardized recommendations are lacking on the avoidance of physical exertion to protect the abdom - inal wall in patients who have recently undergone abdominal surgery. It is unclear how much stress the abdominal wall can withstand and how long the patient should be exempted from work. The goal of this review is to determine whether there are any standardized, evidence-based recommendations for postoperative care from which valid recommendations for Germany can be derived.

METHODS

We systematically searched the literature for evidence-based recommendations on exertion avoidance after abdominal surgery, as well as for information on the extent to which postoperative abdominal wall stress contributes to incisional hernia formation. We then created a questionnaire on recommendation practices and sent it to all of the chiefs of general and visceral surgery services that were listed in the German hospital registry (1078 chiefs of service as of June 2016).

RESULTS

All 16 of the included studies on postoperative exertion avoidance contained low-level evidence that could only be used to formulate weak recommendations ("can," rather than "should" or "must"). Some 50 000 incisional hernia repair procedures are performed in Germany each year, with a reported incidence of 12.8% in the first two years after surgery. The scientifically documented risk factors for incisional herniation are related to techniques of wound closure, the suture materials used, wound infections, and the patient risk profile. From the biological point of view, the abdominal wall regains full, normal resistance to exertional stress 30 days after a laparotomy with uncomplicated healing. Most incisional hernias (>50%) arise 18 months or more after surgery; they are more common in patients who have avoided exertion for longer periods of time (more than 8 weeks). Our questionnaire was returned by 386 surgical clinics. The responses showed that 78% of recommendations were based on personal experience only. The recommendations varied widely; exertion avoidance was recommended for as long as 6 months.

CONCLUSION

The dilemma of a deficient evidence base for postoperative exertion avoidance to protect the abdominal wall should be resolved with the much higher-quality evidence available from hernia research, which concerns the patient population with the biologically least favorable starting conditions. Based on our analysis of the available literature in light of the biomechanical principles of abdominal wall healing, we propose a new set of recommendations on postoperative exertion avoidance after abdominal surgery, with the goal of eliminating excessively protracted exertion avoidance and enabling a timely return to work.

The effect of modified Pilates-based positions on pelvic floor electromyographic (EMG) activity; a pilot study

INTRODUCTION

The evidence regarding the effect of exercise, specifically Modified Pilates (MP), on pelvic floor muscles (PFMs) is limited. We report our pilot study using the MAPLe® device to assess the effect of MP type exercises on PFM electomyographic (EMG) activity and whether PFM contraction could be performed during specific MP exercises.

METHODS

The MAPLe® device was used to measure EMG activity of PFMs in healthy volunteers in different MP positions. Positions were divided into 'neutral', 'core' and 'plank' and EMG readings were taken at rest, during Valsalva and during active contraction.

RESULTS

Twenty volunteers were recruited. The median age was 35 (IQR 27-39.5) years. Higher EMG readings were seen in 'core' and 'plank' positions at rest. No position inhibited a conscious contraction and positions which engaged core muscles provoked an augmented contraction.

CONCLUSION

This is the first study to show that when MP positions are held for short periods of time, in asymptomatic women, the changes in PFM EMG are higher. This suggests that a stronger muscle contraction can be achieved when the core is co-contracted. Higher EMG readings were seen during 'core' and 'plank' positions; despite this, further activation with a conscious PFM contraction was still achievable.

Enhanced Recovery and Surgical Optimization Protocol for Minimally Invasive Gynecologic Surgery: An AAGL White Paper

This is the first Enhanced Recovery After Surgery (ERAS) guideline dedicated to standardizing and optimizing perioperative care for women undergoing minimally invasive gynecologic surgery. The guideline was rigorously formulated by an American Association of Gynecologic Laparoscopists Task Force of US and Canadian gynecologic surgeons with special interest and experience in adapting ERAS practices for patients requiring minimally invasive gynecologic surgery. It builds on the 2016 ERAS Society recommendations for perioperative care in gynecologic/oncologic surgery by serving as a more comprehensive reference for minimally invasive endoscopic and vaginal surgery for both benign and malignant gynecologic conditions. For example, the section on preoperative optimization provides more specific recommendations derived from the ambulatory surgery and anesthesia literature for the management of anemia, hyperglycemia, and obstructive sleep apnea. Recommendations pertaining to multimodal analgesia account for the recent Food and Drug Administration warnings about respiratory depression from gabapentinoids. The guideline focuses on workflows important to high-value care in minimally invasive surgery, such as same-day discharge, and tackles controversial issues in minimally invasive surgery, such as thromboprophylaxis. In these ways, the guideline supports the American Association of Gynecologic Laparoscopists and our collective mission to elevate the quality and safety of healthcare for women through excellence in clinical practice.

Is Physical Activity Good or Bad for the Female Pelvic Floor? A Narrative Review

More women participate in sports than ever before and the proportion of women athletes at the Olympic Games is nearly 50%. The pelvic floor in women may be the only area of the body where the positive effect of physical activity has been questioned. The aim of this narrative review is to present two widely held opposing hypotheses on the effect of general exercise on the pelvic floor and to discuss the evidence for each. Hypothesis 1: by strengthening the pelvic floor muscles (PFM) and decreasing the levator hiatus, exercise decreases the risk of urinary incontinence, anal incontinence and pelvic organ prolapse, but negatively affects the ease and safety of childbirth. Hypothesis 2: by overloading and stretching the PFM, exercise not only increases the risk of these disorders, but also makes labor and childbirth easier, as the PFM do not obstruct the exit of the fetus. Key findings of this review endorse aspects of both hypotheses. Exercising women generally have similar or stronger PFM strength and larger levator ani muscles than non-exercising women, but this does not seem to have a greater risk of obstructed labor or childbirth. Additionally, women that specifically train their PFM while pregnant are not more likely to have outcomes associated with obstructed labor. Mild-to-moderate physical activity, such as walking, decreases the risk of urinary incontinence but female athletes are about three times more likely to have urinary incontinence compared to controls. There is some evidence that strenuous exercise may cause and worsen pelvic organ prolapse, but data are inconsistent. Both intra-abdominal pressure associated with exercise and PFM strength vary between activities and between women; thus the threshold for optimal or negative effects on the pelvic floor almost certainly differs from person to person. Our review highlights many knowledge gaps that need to be understood to understand the full effects of strenuous and non-strenuous activities on pelvic floor health.

Bowel preparation prior to minimally invasive sacrocolpopexy: a randomized controlled trial

INTRODUCTION AND HYPOTHESIS

The objective was to determine if a bowel preparation prior to minimally invasive sacrocolpopexy (MIS) influences post-operative constipation symptoms. We hypothesized that women who underwent a bowel preparation would have an improvement in post-operative defecatory function.

METHODS

In this randomized controlled trial, women undergoing MIS received a pre-operative bowel preparation or no bowel preparation. Our primary outcome was post-operative constipation measured by the Patient Assessment of Constipation Symptoms (PAC-SYM) 2 weeks post-operatively. Secondary outcomes included surgeon's perception of case difficulty. Both intention-to-treat (ITT) and per-protocol analyses (PPA) were performed. Analyses were carried out using t test, Fisher's exact test, the Wilcoxon test and the Chi-squared test.

RESULTS

Of 105 enrolled women, 95 completed follow-up (43 preparation and 52 no preparation). Baseline characteristics and rates of complications were similar. No differences were noted on ITT. The post-operative abdominal PAC-SYM subscale was closer to baseline for women who received a bowel preparation on PPA (change in score 0.74 vs 1.08, p = 0.045). Women who underwent a preparation were less likely to report strain (6.0% vs 26.7%, p = 0.009) or type 1 Bristol stool on their first post-operative bowel movement (4.3% vs 17.5%, p = 0.047). Surgeons were more likely to rate the complexity of the case as "more difficult than average" (54.4% vs 40.1%, p = 0.027) in those without a bowel preparation.

CONCLUSIONS

Although there was no difference in ITT analysis, women who underwent a bowel preparation prior to MIS demonstrated benefit to post-operative defecatory function with a corresponding improvement in surgeon's perception of case complexity.

Current practice patterns for postoperative activity restrictions in children

BACKGROUND

Postoperative activity restrictions are designed to prevent undue stress on a recent repair and minimize the risk of surgical complication, however, there is little evidence to support certain restrictions in clinical practice. For the pediatric population, there is a paucity of formal evaluations of postoperative activity restrictions, and little is known about current practice patterns among pediatric surgeons. This study aimed to describe national practice patterns of pediatric surgeons for postoperative activity recommendations following three common general surgical procedures.

METHODS

A 7-item survey was sent to all American Pediatric Surgical Association (APSA) members regarding surgeon practice of recommended activity restrictions for school attendance, participation in playground or gym, participation in contact sports, and heavy lifting in children following 3 procedures: exploratory laparotomy, laparoscopic appendectomy, and inguinal hernia repair. Information on type and duration of clinical practice was also collected for each surgeon. Descriptive and bivariate analyses were performed.

RESULTS

The survey was completed by 293 pediatric surgeons for a response rate of 28.9%. There was wide national variability in the recommended activity restrictions for children <12 years old among pediatric surgeons. Following laparoscopic appendectomy, 30.7%, 51.9% and 47.8% of surgeons recommends restriction of gym, contact sports, and heavy lifting for 2-3 weeks respectively, but 26.7%, 19.8%, and 22.2% do not recommend any restriction whatsoever of these three activities. Following inguinal hernia repair, 31.7%, 49.1% and 44.4% of surgeons recommend restriction of gym, contact sports, and heavy lifting for 2-3 weeks, but 30.8%, 30.8%, and 29.2% do not recommend any restriction of these three activities. Only 22% of surgeons change their activity restriction recommendations for children ≥12 years old, this decision was not associated with surgeon years in practice or type of practice.

CONCLUSIONS

There is considerable variability in surgeon recommendations for activity restrictions following three general surgery procedures in children. While activity restrictions are rooted in the physiology of wound healing, there is little evidence to support the benefit of these restrictions in clinical practice. In addition, activity restriction may have unintended deleterious effects on a child's psychosocial well-being and quality of life. Further investigation should be pursued to understand the utility of activity restrictions in children and their impact on clinical outcomes and patient quality of life.

TYPE OF STUDY

Treatment study.

LEVEL OF EVIDENCE

Level V, expert opinion.

Variables Affecting Intra-abdominal Pressure During Lifting in the Early Postpartum Period

OBJECTIVES

Intra-abdominal pressure (IAP) may contribute to pelvic floor health, although the direction and magnitude of such an effect, if any, are not yet known. Identifying individual characteristics, and in particular modifiable factors, associated with higher IAP during recovery from vaginal childbirth might serve to mitigate early pelvic floor dysfunction. The aim of this study was to identify characteristics associated with maximal IAP during lifting in postpartum primiparous women who delivered vaginally.

METHODS

At 6 to 10 weeks postpartum, we measured maximal IAP, assessed via an upper vaginal sensor, as participants (enrolled in an ongoing cohort study) lifted a weighted car seat (12.5 kg). We evaluated whether the following independent variables were associated with maximal IAP: age, ethnicity, body mass index, height, abdominal circumference, weight gain during pregnancy, lifting time, breath holding during lifting, lifting technique, measures of muscular fitness, and days since delivery.

RESULTS

In the 206 participants, weight, waist circumference, body mass index, and days since delivery were positively associated with mean maximal IAP during lifting, whereas IAP decreased as height increased. As the duration of the lifting task increased, mean maximal IAP during lifting also increased, but there were no associations between lifting technique or breath holding during lifting and IAP. Neither pelvic floor muscle strength nor abdominal muscle endurance was associated with IAP during lifting.

CONCLUSIONS

Other than measures of body habitus and lifting duration, we did not identify modifiable factors that could mitigate maximal pressures experienced by the pelvic floor during the early postpartum period.

Intraabdominal pressure in women during CrossFit exercises and the effect of age and parity

To determine intraabdominal pressure (IAP) in women during CrossFit and to determine whether parity, age, or CrossFit experience affects IAP during CrossFit exercises, we evaluated 10 women: 5 experienced and active CrossFitters and 5 who were not regularly engaged in CrossFit. A Laborie urodynamics abdominal pressure probe with the Goby wireless system measured IAP during 10 repetitions of 13 different CrossFit exercises. Women had a mean age of 36 years. A significant difference was found between mean peak IAP of the 5 parous vs the 5 nulliparous women (P = 0.009). Experience with CrossFit did not affect mean peak IAP achieved with exercise. In some exercises, there was a significant change in IAP as participants progressed through repetitions (P = 0.003 for back squats and 0.04 for sit-ups). Participants achieved IAP values that were markedly higher than those previously published.

Restrictions and limitations after pelvic floor surgery: what's the evidence?

PURPOSE OF REVIEW

A common concern regarding pelvic floor surgery is the relatively high risk of recurrence. In an effort to minimize this risk, many surgeons instruct their patients to avoid certain activities during the healing process so as not to damage the repair before proper healing has occurred. However, many of these restrictions have been historically based on little to no hard evidence. The purpose of this review is to present the latest evidence-based recommendations regarding restrictions and limitations after pelvic floor surgery.

RECENT FINDINGS

The current review covers postoperative activities that could impact proper healing of a vaginal incision and of the strength of the reconstruction itself. It also looks at safety of the patient and those around her as she heals. Topics include pelvic rest, swimming, lifting exercising, working, and driving. Observational research suggests that many unavoidable activities of daily living may have as great, if not an even greater, risk of impacting the healing process than many of the modifiable activity restrictions that are commonly imposed on patients. This may explain why recent clinical trials show no greater problem with healing in patients randomized to less strict postoperative restrictions than the standard.

SUMMARY

Although further research is necessary, it appears that patients are more satisfied with less strict postoperative limitations, and this less restrictive activity may not have any significant negative impact on the healing process.

Prevention of pelvic floor disorders: international urogynecological association research and development committee opinion

INTRODUCTION AND HYPOTHESIS

Pelvic floor disorders (PFD), including urinary incontinence, anal incontinence, and pelvic organ prolapse, are common and have a negative effect on the quality of life of women. Treatment is associated with morbidity and may not be totally satisfactory. Prevention of PFDs, when possible, should be a primary goal. The purpose of this paper is to summarise the current literature and give an evidence-based review of the prevention of PFDs METHODS: A working subcommittee from the International Urogynecological Association (IUGA) Research and Development (R&D) Committee was formed. An initial document addressing the prevention of PFDs was drafted, based on a review of the English-language literature. After evaluation by the entire IUGA R&D Committee, revisions were made. The final document represents the IUGA R&D Committee Opinion on the prevention of PFDs.

RESULTS

This R&D Committee Opinion reviews the literature on the prevention of PFDs and summarises the findings with evidence-based recommendations.

CONCLUSIONS

Pelvic floor disorders have a long latency, and may go through periods of remission, thus making causality difficult to confirm. Nevertheless, prevention strategies targeting modifiable risk factors should be incorporated into clinical practice before the absence of symptomatology.

Reproducibility of intra-abdominal pressure measured during physical activities via a wireless vaginal transducer

AIMS

In the urodynamics laboratory setting, a wireless pressure transducer, developed to facilitate research exploring intra-abdominal pressure (IAP) and pelvic floor disorders, was highly accurate. We aimed to study reproducibility of IAP measured using this transducer in women during activities performed in an exercise science laboratory.

METHODS

Fifty-seven women (mean ± SD, age 30.4 ±9.3 years; body mass index, 22.4 ± 2.68 kg/m) completed 2 standardized activity sessions using the same transducer at least 3 days apart. Pressure data for 31 activities were transmitted wirelessly to a base station and analyzed for mean net maximal IAP, area under the curve, and first moment of the area. Activities included typical exercises, lifting 13.6 to 18.2 kg, and simulated household tasks. Analysis for test-retest reliability included Bland-Altman plots with absolute limits of agreement, Wilcoxon signed rank tests to assess significant differences between sessions, intraclass correlations, and κ statistics to assess intersession agreement in highest versus other quintiles of maximal IAP.

RESULTS

Few activities exhibited significant differences between sessions in maximal IAP, or in area under the curve and first moment of the area values. For 13 activities, the agreement between repeat measures of maximal IAP was better than ±10 cm H20; for 20 activities, better than ±15 cm H20. The absolute limits of agreement increased with mean IAP. The highest quintile of IAP demonstrated fair/substantial agreement between sessions in 25 of 30 activities.

CONCLUSIONS

Reproducibility of IAP depends on the activity undertaken. Interventions geared toward lowering IAP should account for this, maximize efforts to improve IAP reproducibility.

Intra-abdominal pressure during Pilates: unlikely to cause pelvic floor harm

INTRODUCTION AND HYPOTHESIS

The objective was to describe the intra-abdominal pressures (IAP) generated during Pilates Mat and Reformer activities, and determine whether these activities generate IAP above a sit-to-stand threshold.

METHODS

Twenty healthy women with no symptomatic vaginal bulge, median age 43 (range 22-59 years), completed Pilates Mat and Reformer exercise routines each consisting of 11 exercises. IAP was collected by an intra-vaginal pressure transducer, transmitted wirelessly to a base station, and analyzed for maximal and area under the curve (AUC) IAP.

RESULTS

There were no statistically significant differences in the mean maximal IAP between sit-to-stand and any of the Mat or Reformer exercises in the study population. Six to twenty-five percent of participants exceeded their individual mean maximal IAP sit-to-stand thresholds for 10 of the 22 exercises. When measuring AUC from 0 cm H2O, half the exercises exceeded the mean AUC of sit-to-stand, but only Pilates Reformer and Mat roll-ups exceeded the mean AUC of sit-to-stand when calculated from a threshold of 40 cm H2O (consistent with, for example, walking).

CONCLUSION

Our results support recommending this series of introductory Pilates exercises, including five Mat exercises and six Reformer exercises to women desiring a low IAP exercise routine. More research is needed to determine the long-term effects of Pilates exercise on post-surgical exercise rehabilitation and pelvic floor health.

More complicated than it looks: the vagaries of calculating intra-abdominal pressure

Activities thought to induce high intra-abdominal pressure (IAP), such as lifting weights, are restricted in women with pelvic floor disorders. Standardized procedures to assess IAP during activity are lacking and typically only focus on maximal IAP variably defined. Our intent in this methods article is to establish the best strategies for calculating maximal IAP and to add area under the curve and first moment of the area as potentially useful measures in understanding biologic effects of IAP. Thirteen women completed a range of activities while wearing an intravaginal pressure transducer. We first analyzed various strategies heuristically using data from 3 women. The measure that seemed to best represent maximal IAP was an average of the 3, 5, or 10 highest values, depending on activity, determined using a top-down approach, with peaks at least 1 second apart using algorithms written for Matlab computer software, we then compared this strategy with others commonly reported in the literature quantitatively using data from 10 additional volunteers. Maximal IAP calculated using the top-down approach differed for some, but not all, activities compared with the single highest peak or to averaging all peaks. We also calculated area under the curve, which allows for a time component, and first moment of the area, which maintains the time component while weighing pressure amplitude. We validated methods of assessing IAP using computer-generated sine waves. We offer standardized methods for assessing maximal area under the curve and first moment of the area for IAP to improve future reporting and application of this clinically relevant measure in exercise science.

Intra-abdominal pressures during activity in women using an intra-vaginal pressure transducer

Strenuous physical activity has been linked to pelvic floor disorders in women. Using a novel wireless intra-vaginal pressure transducer, intra-abdominal pressure was measured during diverse activities in a laboratory. Fifty-seven women performed a prescribed protocol using the intra-vaginal pressure transducer. We calculated maximal, area under the curve and first moment of the area intra-abdominal pressure for each activity. Planned comparisons of pressure were made between levels of walking and cycling and between activities with reported high pressure in the literature. Findings indicate variability in intra-abdominal pressure amongst individuals doing the same activity, especially in activities that required regulation of effort. There were statistically significant differences in maximal pressure between levels of walking, cycling and high pressure activities. Results for area under the curve and first moment of the area were not always consistent with maximal pressure. Coughing had the highest maximal pressure, but had lower area under the curve and first moment of the area compared to most activities. Our data reflect novel findings of maximal, area under the curve and first moment of the area measures of intra-abdominal pressure, which may have clinical relevance for how physical activity relates to pelvic floor dysfunction.

Activity restrictions after gynecologic surgery: is there evidence?

Many surgeons recommend rest and restricting activities to their patients after surgery. The aim of this review is to summarize the literature regarding types of activities gynecologic surgeons restrict and intra-abdominal pressure during specific activities and to provide an overview of negative effects of sedentary behavior (rest). We searched PubMed and Scopus for years 1970 until present and excluded studies that described recovery of activities of daily living after surgery as well as those that assessed intra-abdominal pressure for other reasons such as abdominal compartment syndrome and hypertension. For our review of intra-abdominal pressure, we excluded studies that did not include a generally healthy population, or did not report maximal intra-abdominal pressures. We identified no randomized trial or prospective cohort study that studied the association between postoperative activity and surgical success after pelvic floor repair. The ranges of intra-abdominal pressures during specific activities are large and such pressures during activities commonly restricted and not restricted after surgery overlap considerably. There is little concordance in mean peak intra-abdominal pressures across studies. Intra-abdominal pressure depends on many factors, but not least the manner in which it is measured and reported. Given trends towards shorter hospital stays and off work intervals, which both predispose women to higher levels of physical activity, we urge research efforts towards understanding the role of physical activity on recurrence of pelvic organ prolapse and urinary incontinence after surgery.

Exploring the association between lifetime physical activity and pelvic floor disorders: study and design challenges

BACKGROUND

One in four women has moderate to severe symptoms of at least one pelvic floor disorder. Lifetime physical activity, a modifiable risk factor, may theoretically predispose women to, or protect them from, developing pelvic floor disorders. It is neither feasible nor ethical to test this association using the most rigorous (level I) study design.

PURPOSE

The aim of this manuscript is to describe the methods for the PHysical ACtivity Study (PHACTS), which encompasses two case-control studies and the development of a registry, and to describe challenges and solutions to study progress to date. For each of the case-control studies, the primary aims are to determine, compared to controls with neither pelvic organ prolapse nor urinary incontinence, whether 1) pelvic organ prolapse or 2) stress urinary incontinence is associated with a) increased or decreased current leisure activity or b) increased or decreased overall lifetime activity (including leisure, household, outdoor, and occupational) measured in MET-hours per week, as well as in strenuous hours per week.

METHODS

To obtain 175 pelvic organ prolapse cases, 175 stress urinary incontinence cases, and an equal number of age, body mass index and recruitment site matched controls, we plan to enroll 1500 women from about 20 primary care level clinics.

RESULTS

We have encountered various challenges leading to lessons learned about minimizing bias, recruitment from community clinics, the lifetime physical activity instrument used, and data management.

CONCLUSIONS

Our experiences can help guide future investigators studying risk factors, particularly physical activity, and pelvic floor disorders.

A Gel filled intravaginal transducer for extended measurements of intra-abdominal pressure

Limitations of the standard urogynecological pressure transducers have not adequately provided reliable measurements of intra-abdominal pressure (IAP) during physical activities. A previous novel intravaginal pressure transducer (IVT) was developed in order to overcome the shortcomings in existing technology. The design of the IVT was validated though comparisons with existing pressure transducers in both the clinical and bench top settings. However, a number of improvements were needed to overcome limitations in the previous design. A larger elastomeric capsule with transducer was developed and filled with silicone gel to replace the existing saline filled capsule and to better integrate proposed wireless technology. Impulse response and frequency testing were compared between the saline filled IVT and the new gel filled sensor and were found to be equivalent. Additional testing was performed on the gel filled device including drift and temperature measurements of sensitivity and offset. Results show the temperature coefficient of offset and sensitivity within correctible limitations with our proposed signal conditioner circuits.

[Convalescence recommendations after incontinence and pelvic organ prolapse surgery: A study of opinions among French surgeons]

INTRODUCTION

Since increased intra-abdominal pressure contributes to pelvic floor disorders, physicians commonly restrict various activities postoperatively: most patients are instructed to avoid lifting, exercise and heavy labour after surgery. The aim of this study was to describe advice and restrictions given by French surgeons to patients after urogynecological surgery.

METHODS

In 2009, French urologists and gynaecologists surgeons received a tested questionnaire about postoperative treatment and convalescence recommendations following stress urinary incontinence and pelvic organ prolapse surgery.

RESULTS

After 13 exclusions (missing data), 76 (85%) of the questionnaires were suitable for analysis. The expected postoperative hospital stay was median 3 days (range, 3-4) following surgery by vaginal route or laparoscopic sacral colpopexy and 5 days (range, 4-6) following laparotomy (P<0.0001). The recommended sick leave was median 4 weeks (range, 2-8) for patients following pelvic organ prolapse surgery. The recommended time till recommencement of sexual intercourse was median 4 weeks (range, 2-12) following laparoscopic sacral colpopexy. The overall, great variance could not be explained by demographic differences between gynaecologists (male/female, private or public hospital, urologist/gynaecologist), but by surgical experience. Recommended lifting restrictions were median 6 weeks (range, 4-10) and 4 weeks (range, 2-8) following laparoscopic sacral colpopexy for low-experienced surgeons and high-experienced surgeons, respectively.

CONCLUSION

Current activity restrictions often placed on postoperative patients show substantial variability. Evidence-based guidelines and consensus are desirable.

Development and testing of a vaginal pressure sensor to measure intra-abdominal pressure in women

AIMS

Elevated intra-abdominal pressure (IAP) may be a potentially modifiable risk factor for pelvic floor disorders. However, limited evidence exists due to the lack of instruments suitable to measure abdominal pressures in real world settings. The aim of this study was to develop and test a vaginal sensor prototype to measure intra-abdominal pressure in women.

METHODS

We developed a non-directional vaginal sensor by housing pressure-sensing circuit boards in 1.2 x 3 cm radially symmetric silicon capsules. We characterized the response in a standardized pressure chamber. Eight women wore a sensor intra-vaginally while undergoing filling cystometry. We compared peak pressures during coughing, valsalva, squatting, and jumping to those obtained using a #10 French rectal balloon urodynamics catheter. We calculated Pearson's correlation coefficients between rectal and vaginal sensors for each event.

RESULTS

The vaginal sensors exhibited linear responses during initial bench testing. Each transducer correlated well with the rectal balloon catheter during coughing, valsalva, and squatting (r = 0.97, 0.94, and 0.97, respectively). However, the rectal balloon catheter recorded higher peak and lower, often negative, trough pressures during jumping. The vaginal sensor showed no such artifact.

CONCLUSIONS

This vaginal pressure sensor can be used as a surrogate for measuring intra-abdominal pressure in women without advanced prolapse. By measuring pressure at the physiological source, the vaginal sensor is less prone to extraneous noise and error than current transducers. Using this prototype, we will next develop a remote wireless version to capture a range of abdominal pressures experienced outside of the laboratory setting.

Building the evidence base for postoperative and postpartum advice

Recommendations for activity after obstetric and gynecologic procedures remain based on tradition and anecdote. After reviewing the current evidence base, guidelines, and practice for postdischarge instructions related to physical activity after the most common obstetric and gynecologic surgical procedures, we conclude that the available data do not support many of the recommendations currently provided. Restrictions on lifting and climbing stairs should likely be abandoned. Guidance on driving should focus on the concern regarding cognitive function and analgesics rather than concerns of wound separation/dehiscence. Given the impact of these recommendations on daily life events, consistent, evidence-based advice on when and how women can safely resume exercise, driving, working, and sexual intercourse is critical. The evidence base informing advice for most of these issues is minimal; we need prospective, well-designed studies to help guide us and our patients.

Development of a novel intra-vaginal transducer with improved dynamic response

Limitations of standard clinical pressure transducers have hampered our ability to provide reliable measurements of intra-abdominal pressure (IAP) during physical activities. To overcome these limitations, a novel intravaginal transducer (IVT) capable of accurate, reliable, and continuous IAP measurements during normal activity was developed. The design was validated through comparison with standard clinical pressure transducers in both bench top and clinical tests. The IVT demonstrated an improved dynamic response when compared to a standard rectal balloon catheter. Additionally, the radially symmetric design allows for accurate measurement within non-fluid-filled tissue cavities and simple placement within the vaginal canal. This is an advantage over sensor-tipped transducers which are only reliable in fluid-filled compartments. The IVT design presented here is preliminary to a wireless version that will allow for IAP measurement during activities outside the clinic.

Changes in physical activity after abdominal sacrocolpopexy for advanced pelvic organ prolapse

OBJECTIVE

The objective of the study was to describe changes in physical activity 1 year after sacrocolpopexy for pelvic organ prolapse.

STUDY DESIGN

This was a prospective cohort of 301 randomized trial participants.

RESULTS

Compared with baseline, 1 year after surgery, 36% increased, 18% decreased, and 47% did not change preoperative exercise intensity level. In contrast, women were more likely to reduce (24%) than increase (11%) the frequency of major effort activities, like heavy lifting. Of 99 women who reported preoperatively that prolapse interfered substantially with doing exercise or recreation, house/yard work, or work outside the home, 83 (84%) reported no substantial interference 1 year later. After surgery, women reporting substantial interference from prolapse or treatment had similar rates of interval treatment for stress incontinence or prolapse as women not reporting substantial interference.

CONCLUSION

After sacrocolpopexy, one third of women increased exercise intensity, few increased major effort activities, and most reported that prolapse no longer interfered with activities.

Intraabdominal pressure changes associated with lifting: implications for postoperative activity restrictions

OBJECTIVE

The purpose of this study was to describe the effect of the lifting maneuver and the quantity of weight lifted on the generation of intraabdominal pressure.

STUDY DESIGN

Forty-one women who underwent urodynamic evaluation performed 4 lifting maneuvers, each while lifting 0, 2.5, 5, 10, and 15 kg. The lifting maneuvers were routine activities that included squatting with and without assistance, lifting from a counter, and receiving weight. Pressure was recorded with a rectal microtip catheter. Each lift was performed twice, and the average pressure change was analyzed.

RESULTS

When controlled for potential confounding variables, repeated-measures analysis of variance revealed a significant interaction between lift weight and lift maneuver (P < .001). Squatting was associated with generation of higher intraabdominal pressure than lifting from a counter or receiving weights into outstretched arms (P < .001). Lifting > or = 2.5 kg resulted in significant changes in intraabdominal pressure, regardless of lift maneuver (P < .001).

CONCLUSION

Both the lifting maneuver and the quantity of weight should be considered when counseling patients regarding postoperative lifting.

Vaginal pressure during daily activities before and after vaginal repair

The objective of the study was to measure vaginal pressure during various daily activities in patients before and after vaginal surgery for pelvic organ prolapse, searching data for evidence-based activity guidelines. Vaginal pressure (VP) was studied in 23 patients during activities such as rest, pelvic floor contraction (PFC), coughing, Valsalva, rising from sitting to standing and lifting 2 and 5 kg with four different lifting techniques. VP was measured before, 1-5 days and 4-6 weeks after vaginal repair. Mean VP was four to five times higher during coughing and Valsalva compared to PFC and lifting 2 and 5 kg. Lifting in the walking position created a slightly higher VP compared to other lifting techniques, which did not differ. The VP did not increase when lifting 5 kg compared to 2 kg. Mean VP during coughing and Valsalva were significantly lower 1-5 days after the operation. VP was not related to the type of vaginal repair. The results imply that post-operative counselling should concentrate more on treating chronic cough and constipation than restrictions of moderate physical activities.